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Fall protection device

a protection device and ratchet technology, applied in life-saving devices, safety belts, building rescue, etc., can solve the problems of short and limited cushion effect of us09861841b1, difficult recycling, limited torque, etc., and achieve the effect of slowing down the rotation of the ratchet ring

Inactive Publication Date: 2020-01-23
CHANG TIAN HSING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a fall protection device that solves the problems of previous designs. It includes a main member with a chamber inside and an axle running across the chamber. A rotary disc and brake member spin around the axle. The rotary disc has a cylinder with an axial channel, and a roll of safety belt wraps around the cylinder. A ratchet ring with teeth is joined to the main member through a flexible band. When the safety belt pulls the rotary disc, the ratchet ring's inner teeth engage, and a flexible band slows down the ratchet ring's rotation. This design helps to prevent accidents and provide better protection against falls.

Problems solved by technology

In other word, US09861841B1 has a problem of short and limited cushion effect.
In addition, US09861841B1 also has the problem of difficult recycling.
The tolerance ring 4 therefore may only sustain a limited torque, and its stability to handle the torque is compromised due to a smaller contact area.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016]The following descriptions are exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.

[0017]As shown in FIGS. 1 to 7, the fall protection device according to an embodiment of the present invention includes the following components.

[0018]A main member 10 includes a casing 11, a first cover 12, a second cover 13, and a metallic ring 14. The casing 11 provides opening front and back sides and a chamber 100 in between. The first cover 12 is detachably joined to the front side and the second cover 13 is detachably joined to the back side, thereby sealing the chamber 100 inside the main me...

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PUM

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Abstract

The fall protection device includes a main member having a chamber inside. An axle runs across the chamber. A rotary disc and a brake member synchronously spin around the axle. The rotary disc has a cylinder with an axial channel, where the axle runs through the axial channel, and a roll of safety belt wraps around the cylinder. A ratchet ring is configured on the main member having teeth along an inner wall and a greater diameter than that of the cylinder. The ratchet ring is joined to the main member through a flexible band. When the safety belt pulls the rotary disc to accelerate until the brake member engages the ratchet ring's inner teeth, the flexible band slows down the ratchet ring's rotation.

Description

BACKGROUND OF THE INVENTION(a) Technical Field of the Invention[0001]The present invention is generally related safety devices, and more particular to a fall protection device having built-in cushion mechanism(b) Description of the Prior Art[0002]US09861841B1 teach a fall protection device involving a retard member 30 spinning around a shaft lever 20. The retard member 30 has an end fixed to a brake assembly 60, and has a friction surface 31 coupled to an inner wall 440 of a rotary drum 40. A safety belt 200 wraps around an outer wall 460 of the rotary drum 40. The safety belt 200 ties to a worker. When the worker falls, the retard member 30 does not move but the rotary drum 40 spins relatively to the retard member 30. The friction between the friction surface 31 and the inner wall 440 slows down the spin of the rotary drum 40, and the pull of the safety belt 200.[0003]However, as the rotary drum 40 is driven by the safety belt 200 to spin relatively to the retard member 30, the for...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A62B35/00B65H75/30
CPCA62B35/0093B65H75/30A62B1/10
Inventor CHANG, TIAN HSING
Owner CHANG TIAN HSING